PMID- 35934384 OWN - NLM STAT- MEDLINE DCOM- 20220809 LR - 20220809 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 1221 DP - 2022 Aug 15 TI - Combination of magnetic beads extraction and ultraperformance liquid chromatography tandem mass spectrometry detection for the clinical diagnosis of allergies. PG - 340157 LID - S0003-2670(22)00728-0 [pii] LID - 10.1016/j.aca.2022.340157 [doi] AB - The total amount of immunoglobulin E (IgE) in human serum is an important parameter in diagnosing allergies. To reduce the false diagnosis of allergies and better assist in therapy, clinical studies can be performed to obtain accurate and reliable measurements of IgE. A magnetic beads (MBs)-based ultraperformance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method for total IgE measurement and the diagnosis of food allergies in serum was developed in this study. First, IgE was extracted by MBs coupled with anti-IgE antibody from serum. The extracted IgE was quantified by a specific signal peptide after digestion. A spiked linear IgE concentration ranging from 400 to 5000 ng mL(-1) was used for quantification. The limits of detection and quantification were 400 ng mL(-1) and 800 ng mL(-1), respectively, for the developed method. Additionally, the combined capacity of the extracted IgE with different allergic proteins was evaluated by a binding experiment in vitro. The combining capacity of IgE with different allergens was used to speculate the kind of allergens that induce allergies in patients. Overall, a new method was developed that could be used to quantify the amount of IgE and simultaneously diagnose which allergen causes an allergic reaction, and this method may provide a powerful new tool in the clinical detection of allergies. Moreover, the developed method was applied to analyze IgE in four samples of patient serum and four serum samples from healthy individuals. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Li, Yang AU - Li Y AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China; School of Pharmaceutical Sciences, Health Science Center, Peking University, 100191, China. FAU - Yang, Yi AU - Yang Y AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China. Electronic address: yybjcdc@163.com. FAU - Liu, Yinghui AU - Liu Y AD - Shandong Qingdao Integrated Traditional Chinese and Western Medicine Hospital, 266002, China. FAU - Liu, Jinyuan AU - Liu J AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China. FAU - Yang, Yunjia AU - Yang Y AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China. FAU - Zhang, Jing AU - Zhang J AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China. FAU - Zou, Yue AU - Zou Y AD - School of Pharmaceutical Sciences, Health Science Center, Peking University, 100191, China. FAU - Shu, Lin AU - Shu L AD - School of Pharmaceutical Sciences, Health Science Center, Peking University, 100191, China. FAU - Han, Nanyin AU - Han N AD - School of Pharmaceutical Sciences, Health Science Center, Peking University, 100191, China. FAU - Shao, Bing AU - Shao B AD - Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, 100013, China. LA - eng PT - Journal Article DEP - 20220711 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens MH - Chromatography, Liquid MH - Humans MH - *Hypersensitivity/diagnosis MH - Immunoglobulin E MH - Magnetic Phenomena MH - *Tandem Mass Spectrometry OTO - NOTNLM OT - Food allergy OT - IgE OT - Magnetic beads OT - UPLC-MS/MS EDAT- 2022/08/08 06:00 MHDA- 2022/08/10 06:00 CRDT- 2022/08/07 21:04 PHST- 2022/02/04 00:00 [received] PHST- 2022/06/01 00:00 [revised] PHST- 2022/07/07 00:00 [accepted] PHST- 2022/08/07 21:04 [entrez] PHST- 2022/08/08 06:00 [pubmed] PHST- 2022/08/10 06:00 [medline] AID - S0003-2670(22)00728-0 [pii] AID - 10.1016/j.aca.2022.340157 [doi] PST - ppublish SO - Anal Chim Acta. 2022 Aug 15;1221:340157. doi: 10.1016/j.aca.2022.340157. Epub 2022 Jul 11.